Bobbin-turning lathe



(ModeL) J. B. FELLOWS. Bobbin Turning Lalfhe.

No. 240,985.. P tented Ma 3,1881.

WITNESSES:

. INVBNTOR: at w/l? 'V .BYZZLLMAW f ATTORNEYS.

N. PETERS. Phulo-Liihogruphen Washington D. C.

* nu'rnn STATES PATENT Orrrcs.

JEROME B. FELLOWS, OF FRYEBURG, MAINE.

BOBBlN-TURNING LATHE.

SPECIFICATION forming part of Letters Patent No. 240,985, dated May 3, 1881.

Application filed December I, 1880. (Model) To all whom it may concern:

Be it known that I, JEROME B. FELLOWS, of Fryeburg, in the county ofOxford and State, of Maine, have invented a new and Improved Bobbin-Turnin g Lathe, of which the following is a specification.

The object of this invention is to provide an automatic device for centering the blocks from which bobbins and quills are formed.

The invention consists of a forked block-supporting post actuated by suitable mechanism to present the block to the lathe-centers, and then fall out of the way to permit the turning of the block.

Figure 1 is a front elevation of the device, partly in section. Fig. 2 isavertical sectional elevation of the same on line as m, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents an ordinary bobbin-lathe, provided with a movable tail-center, B, actuated by a treadle,'B, and a stationary head-center, 0. Fixed on the center of the lathe-bedis an inverted-U-shaped support, D, that supports the vertically-adjustable forked and crotcheted postE,which presents the bobbin-block F to the mandrels a b, respectively, of the centers B O. The postE is passed vertically down through the support I), and has its lower end resting on a spring, G, that is connected with the treadle B by means of a rope or rod, G.

Pivoted on the transverse pin 0 within the support D is a dog, H, whose curved tail (1 extends upward nearly in contact with the mandrel b of the stationary head-center O.

A spring, I, secured on the bed of the lathe A, presses upward against the horizontallyprojecting ear f of the dog H and forces the said dog H upward, so that its stud g shallengage in the socket h of the post E, and thereby hold the said post E up to present the bobbin-block F to the mandrels a, b.

The said post E is designed to be provided with several sockets, h, that it maybe adjusted to suit the different sizes of bobbins and quills to be turned off.

The said post E being adjusted to the proper height and held there by the stud g of the dog H, a block, F, is carefully dropped into the fork socket h of the post E, so that said post E falls of its own weight to the position shown in dotted lines, Fig. 1, and leaves the block F free to revolve, the foot of the operator remaining all this time upon the treadle B. As soon as the bobbin or quill is turned off the operators foot is removed from the treadle B. The spring G is thereby released and presses the post E up again, the tail-center B is withdrawn, and the bobbin or quill removed, the dog H being also restored to its primary position by the spring I. Another block, F, is then dropped into the fork of the post E, and the work proceeds as before.

In the ordinary bobbinturning lathe the bobbin-block is centered by the eye, each end of the block being centered in this way. This ordinarymethod not only involves loss of time, but the centering is so far from correct that to insure bobbins ofa given size blocks one-quarter larger are commonly required, thus involving, it will be seen, a loss of about one-quarter of the stock.

In the ordinary bobbin-lathe the average work for one man is five thousand rounded bobbins a day, while with this device a man can easily turn twice that number and use blocks that are of no greater diameter than the bobbins themselves, thus saving also a great deal of stock.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination,with the spring Gr, springdog H, and support D, of a crotcheted post, E, passing through said support and resting on said spring, as shown and described.

2. The combination, with the tail-center B and the crotcheted post E, of the treadle B and the spring G, connected together by the cord or rod G, substantially as and. for the purpose vided with movable tail-center B and treadle set forth. B, of the support; D, post E, springs G I, and 10 3. In alathe, the combination, with the post dog H, provided with tail d and stud 9, sub- E, provided with socket h, of the spring-aetustantially as herein shown and described.

5 ated dog H, provided with tail d and stud g, JEROME B. FELLOWS.

substantially as herein shown, and for the pur- \Vitnesses pose described. 0. W. PIKE,

4. The combination, with the lathe A, pro- S. O. HOBBS. 

